<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <style>
        .box{
            /* 字体的类型
            font-family:'Courier New', Courier, monospace;
            字体大小
            font-size: 50px;
            字体样式
            font-style: italic;
            font-style: normal;
            font-style: oblique;
            字体加粗 100~700 默认是400
            font-weight: 100;
            小型大写字母*/
            font-variant: small-caps; 
        }
        a{
            /* 去掉a标签的下划线 */
            text-decoration: none;
        }
    </style>
</head>
<body>
    <span class="box">
        abcdefghijklmnopqrst
        1234567890
    </span>
    <span>ABCD</span>
    <span>abc</span>
    <a href="#">我是a标签1</a>
    <a href="javascript:void(0)">我是a标签2</a>
</body>
</html>